G.f.: A(x) = Sum_{n>=0} arcsinh( 2^n*x )^n / n!; a power series in x with integer coefficients.
A136647
G.f.: A(x) = Sum_{n>=0} arcsinh( 2^n*x )^n / n!; a power series in x with integer coefficients.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =84a(4) =2688a(5) =276892a(6) =94978048a(7) =111457917800
External references
- oeis: A136647